lib/dummyload: Pad with a few nops so that we do not completely hog the system
Part of the attraction of using a recursive batch is that it is
hard on the system (executing the "function" call is apparently
quite expensive). However, the GPU may hog the entire system for
a few minutes, preventing even NMI. Quite why this is so is unclear,
but presumably it relates to the PM_INTRMSK workaround on gen6/gen7.
If we give the system a break by having the GPU execute a few nops
between function calls, that appears enough to keep SNB out of
trouble.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tomi Sarvela <tomi.p.sarvela@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
[danvet: Add bugzilla link]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1 file changed